Softmod Parent in need of help

heys all, i currently have 3.3u softmod wii last i checked with gamma loader. all my iso's work perfectly. the issue is i just went out and brought mysims racing, tiger woods w/motion plus and wii sports resort. i notice on the mysims racing and wii resort something saying like if i play them or try something can go wrong with my kids wii. i put mysims racing in and it asked me to update. I didn't do jack. i pulled that disc out so quick only because i dont know what might happen. i'm old and just want to see my kids having fun playing free oops i paid for these 3. games. can anyone direct me in the right direction. do i have to update my system another way or install some other apps i need help please.